Relacement Hood for Zeiss 16-35 f2.8

So something happened to my lens hood (ALC-SH106) and it split in half. I was unable to fix it and had resolved on ordering a replacement hood and found it was discontinued through every outlet I could google, including Sony's own site. Does anyone have any idea why it is discontinued? I'm also curious if there is an aftermarket hood anyone has used that would do the trick until I am able to locate the original. It's kind of bizarre that Sony would discontinue parts for a lens still in production...